package com.ynny.interfance_;

/**
 * @author zym
 */
public class Usb3 implements Usb,Usb2{
    @Override
    public void enter() {
        System.out.println("实现了Usb接口的enter方法");
    }
    @Override
    public void exit() {
        System.out.println("实现了Usb2接口的退出方法");
    }
}
